Section+15.1


 * Solubility Curves an Henry's Law**

We begin our study of solutions in section 15.1 where we are introduced to the commonality of solutions and how learning about their behavior is fundamental to understanding chemistry. While studying this section in the textbook we will learn to:

-describe and categorize solutions -calculate concentrations of solutions -analyze the colligative properties of solutions -compare and contrast heterogeneous mixtures

What this means for you - Upon the completion of this section I expect that you will be able to: 1) **describe** the characteristics of solutions (p. 453-454) and **identify** the various types 2) **relate** intermolecular forces and the process of solvation (p. 455-457) 3) **define** solubility and **list**, as well as **describe/explain**, factors affecting it (p. 457-461)

You can view the solvation process of a salt solution on a molecular level to help you understand how the polarity of water is involved in creating aqueous ionic solutions. Another helpful tutorial with audio can be viewed here.

A basic review for [|Reading Solubility Curve Graphs]was created by Mr. Davey and slightly modified by me. It gives step-by-step instructions for reading the graph, as well as provides an example with the answer so you can make sure you're reading them correctly. You have been given 3 solubility practice sheets in class. Can you correctly answer the questions on each of the practice sheets?
 * Solubility Curves**

[|Solubility Practice I] [|Solubility Practice II] [|Solubility Practice III] [|Solubility Curve Graphs] [|Solubility Practice I, II, and III - Answers]

For additional help reading solubility curves and answering associated questions visit the DynamicScience site. This site also offers vocabulary definitions related to solubility and saturation.

Two factors greatly affecting solubility are temperature and pressure. Henry's Law shows the relationship between solubility and pressure. More gas molecules are soluble at higher pressure, so the solubility of a gas increases as the external pressure is increased. Henry's Law is described by the equation: __S1__ = __S2__ P1 P2
 * Henry's Law**

s = solubility (g/L) p = pressure (atm)

[|Henry's Law Practice] provides sample problems along with the corresponding answers. You should be able to solve each of the problems on this practice sheet.

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